Fair Value Measurements (Fair Value of Convertible Preferred Stock Warrants) (Details) - Convertible Preferred Stock Warrant Liability [Member] - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning of the period	$ 0	$ 3,911
Change in fair value	0	13,294
Conversion to common stock warrants	0	(17,205)
End of the period	$ 0	$ 0

Amount of changes in fair value of liability measured at fair value on recurring basis using unobservable input (level 3).

No definition available.

+ Details

Name:	cvrx_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityChangesInFairValue
Namespace Prefix:	cvrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of conversions of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

No definition available.

+ Details

Name:	cvrx_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityConversions
Namespace Prefix:	cvrx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

+ Details

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_FinancialInstrumentAxis=cvrx_ConvertiblePreferredStockWarrantLiabilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: